Physics homework help?

Question

I know you are supposed to use the equation F=(G)(m1)(m2)/r^2 (I think?) but I don't know why I am getting some WEIRD numbers...thanks a lot =)

Two 270 kg (600 lb) masses are separated by a distance of 9 m. Using Newton's law of gravitation, find the magnitude of the gravitational force exerted by one mass on the other.

Answer 1

F=Gm1m2/r^2

=66.7E-12(270)^2/9^2=60.1E-9. It should be a pretty small value.